228 



Detergent, effects on water surface, 

 212 



Devik infra red pick-up, 63 

 Dew-point hygrometer, 217 

 Direct-reading analytical balance, 

 167 



DISCOVERY, 37 



Dredges -- see Ocean Floor, ex- 

 ploration of 

 Drift bottles, 219 

 Dye tracers, 96 

 Dynamometer, 197 



Echo-ranging -- see Acoustic In- 

 strumentation 



Echo-sounding -- see Acoustic In- 

 strumentation 

 Echo-type altimeter, 142 

 EDO Echo-sounder, 197, 200 

 Ekman grabs, 42 



Electric eye photometer (EEP), 183 

 Electrical cables, installation of, 

 152 



Electrical fishing, 42 

 Electrical sparks, discharged under 

 water, 108 



Electromagnetic measurements of 

 velocity, 217 



Electronic gear in sea-ice studies, 

 92 



Electronic -position-indicator, 93 

 Elutriator, 46 



Emery and Champion's scoopfish, 

 264 



Energy transfer -- See Air-Sea 

 Boundary Processes 

 EPCE(R)857, 72 

 Eppley pyrheliometer, 218 

 Estuarine circulation, measure- 

 ment of, 23 

 Explosives, 108 



Filter photometer, 191 



Fluorescein dye, 27 



FRAM, 86, 89, 92, 93 



Fuels, combustible under water, 108 



GALATHEA, 41, 196 



Geological problems, in circulation 



measurements, 23 



Geomagnetic electrokinetograph 



(GEK), 21, 22, 95 



Geophysical Measurements, 71 



Seismic reflection, 78 



Seismic refraction, 72 



Seismic refraction, -- 



bubble-pulse frequency, 74 

 energy spectrum of refract- 

 ed wave, 73 



hydrophone arrangement, 73 

 recording methods, 78 



German Hydrographic Institute, 



195 



Goetz and Tsuneishi Moleciflar 



Filter, 40, 192 



Grab samplers -- see Ocean 



Floor, exploration of 



Gravity measurement, 72 



Hardy plankton recorder, 37, 47 



Hehner tubes, 181 



Helicopters, 90 



Hi-speed samplers, 38, 49 



High-speed diving dredge, 207 



Holme's bottom sampler, 50 



HORIZON, 42, 72, 139 



Hot thermistor bead, in velocity 



measurement, 217 



Hot-wire anemometer, 217 



Humidity measurements -- see 



Air-Sea Boundary Processes 



Hvorslev-Stetson free-fall corer, 



202 



Hydrophones 



Directional, 102, 103 



Non-directional, 103 



in seismic refraction studies, 



71 

 Hygrograph, 217 



IBM summary punch, 118 

 Ice -- see Sea-Ice Problems 

 Inclinonneter, recording, 21 

 International Ice Patrol, 89 

 Ion exchange resins, 184 

 Isaacs-Kidd midwater trawl, 41 



Juday plankton trap, 48 



Kemmer water sampler, 48 



KERSTIN, 206 



Knapp bottom pressure gage, 149 



Knudsen method, 167, 187 



Kort Nozzles, 125 



KuUenberg piston corer, 42 



